You can use any program, just as long as it allows you to copy the cd. Nero, Clonecd, all work without a hitch. However, this is for the ORIGINAL Unreal Tournament. The thread you were referring to was probably
this one, and as you can see that one is about Unreal Tournament 2003, the sequel to Unreal Tournament. UT2003 uses Securom New and is impossible at this moment to copy exact. So check which version you've got, UT has 2 cd's, UT2003 has three cd's.